Voronoi beginner

Hi,

I am new to grasshopper and rhino - but I have created a site, effectively a backalley in rhino which I have placed points on determined by data I found during site analysis.

My goal now is to create a voronoi surface using grasshopper to connect these points. Could anyone offer advise on what the best way to go abotu this is as I have tried looking for tutorials but I am struggling!

Many thanks in advance

sophie